5Methodsï€
Operation Manual 71
What Is Saved in a Method?
Some of the settings saved in a method define how the sample will be processed when the
method is used. Examples of method settings include:
• The oven temperature program
• The type of carrier gas and flows
• The type of detector and flows
• The type of inlet and flows
• The type of column
• The length of time to process a sample
Setpoint parameters can be stored for the components shown in Table 2.
Data analysis and reporting parameters are also stored in a method when it is created on an
Agilent data system, for example OpenLAB CDS or MassHunter software. These parameters
describe how to interpret the chromatogram generated by the sample and what type of report
to print.
The GC method also includes sampler setpoints. Refer to the sampler documentation for
details on setpoints for the supported device:
• For the 7650A ALS, see its Installation, Operation, and Maintenance manual.
• For the 7693A ALS, see its Installation, Operation, and Maintenance manual.
• For the 7697A HS, see its Installation and First Startup manual and Operation manual.
• For the CTC PAL3 AS, see its Installation and First Startup manual and Operation
manual.
Current setpoint parameters are saved when the GC is turned off, and loaded when you turn
the instrument back on.
Table 2 Setpoint parameter components
Component Component
Oven Aux temp
Valve 1–8 Aux EPC
Front and back inlet Aux column
Columns 1 to 6 Aux detector 1 and 2
Detectors 1–4 Post run
Analog 1 and 2 Run table
Front and back injector Sample tray
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